An Introduction to DIN 17175 Alloy Steel Pipe Specifications
DIN 17175 alloy steel pipes are specifically designed to withstand high temperatures and pressures, making them ideal for use in extreme conditions such as those found in boiler systems, pipelines, pressure vessels, and other industrial equipment operating up to 600°C. **Chemical Composition:** Below is an overview of the chemical composition for various grades of DIN 17175 alloy steel pipes: | Grade | C | Si | Mn | P | S | Ni | Cr | Mo | Others | |-------------|-------|-------|---------|--------|--------|----|------|------|--------| | St35.8 | 0.17 Max | 0.10-0.35 | 0.40-0.80 | 0.040 Max | 0.040 Max | - | - | - | - | | St45.8 | 0.21 Max | 0.10-0.35 | 0.40-1.20 | 0.040 Max | 0.040 Max | - | - | - | - | | 17Mn4 | 0.14-0.20 | 0.20-0.40 | 0.90-1.20 | 0.040 Max | 0.040 Max | - | - | 0.30 Max | - | | 19Mn5 | 0.17-0.22 | 0.30-0.60 | 1.00-1.30 | 0.040 Max | 0.040 Max | - | - | 0.30 Max | - | | 15Mo3 | 0.12-0.20 | 0.10-0.35 | 0.40-0.80 | 0.035 Max | 0.035 Max | - | - | 0.25-0.35 | - | | 13CrMo910 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | 0.035 Max | 0.035 Max | - | 0.70-1.10 | 0.45-0.65 | - | | 10CrMo910 | 0.08-0.15 | 0.50 Max | 0.40-0.70 | 0.035 Max | 0.035 Max | - | 2.00-2.50 | 0.90-1.20 | - | | 14MoV63 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | 0.035 Max | 0.035 Max | - | 0.30-0.60 | 0.50-0.70 | V: 0.22-0.32 | | X20CrMoV121 | 0.17-0.23 | 0.50 Max | 0.40-0.70 | 0.030 Max | 0.030 Max | 0.30-0.80 | 10.00-12.50 | 0.80-1.20 | V: 0.25-0.35 | **Mechanical Properties:** Here’s a summary of the mechanical properties for these steel grades: | Grade | Material No. | Min Yield Point (MPa) | Tensile Strength (MPa) | |-------------|--------------|-----------------------|------------------------| | St35.8 | 1.0305 | 235 (WT ≤ 16mm) | 360-480 | | St45.8 | 1.0405 | - | 410-530 | | 17Mn4 | 1.0481 | - | 460-580 | | 19Mn5 | 1.0482 | - | 510-610 | | 15Mo3 | 1.5415 | 275 | 450-600 | | 13CrMo910 | 1.7335 | 295 | 440-590 | | 10CrMo910 | 1.7380 | 285 | 450-600 | | 14MoV63 | 1.7715 | 325 | 460-610 | | X20CrMoV121 | 1.4922 | 490 | 690-850 | These DIN 17175 steel pipes are widely used in industries that require high-pressure and high-temperature resistance. The specific grade selection depends on the application requirements, ensuring optimal performance and safety. For instance, St35.8 is commonly used in less demanding applications, while X20CrMoV121 is suitable for more rigorous conditions where higher strength and temperature resistance are critical. These pipes play a crucial role in maintaining the integrity and efficiency of industrial processes across multiple sectors.NBR Fire Fighting Layflat Hose
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